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  #1  
Old January 13th, 2009, 01:21 PM
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Default Solve (sin x+pi) + x = 0

Could anyone please solve that for me step by step?
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  #2  
Old January 13th, 2009, 03:10 PM
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yes ... get out your calculator, graph the function and calculate the zeros.

you can't solve this equation using elementary algebraic methods.
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Old January 13th, 2009, 04:02 PM
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It may also help if you remember that

\sin{(x + \pi)} = -\sin{x}.
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Old January 13th, 2009, 04:12 PM
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Solve (sin x+pi) + x = 0
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Originally Posted by Prove It View Post
It may also help if you remember that

\sin{(x + \pi)} = -\sin{x}.
did the OP mean \sin(x + \pi) or (\sin{x} + \pi) ???
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Old January 14th, 2009, 08:33 PM
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Originally Posted by skeeter View Post
did the OP mean \sin(x + \pi) or (\sin{x} + \pi) ???
I meant the latter, (my original). I do realise this can't be done with elementary algebra, what I would be interested in seeing such a step-by-step algebraic(ish) method.
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Old January 14th, 2009, 08:38 PM
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Originally Posted by essaymasters View Post
I meant the latter, (my original). I do realise this can't be done with elementary algebra, what I would be interested in seeing such a step-by-step algebraic(ish) method.
the zero is somewhere around -3. (from graphing). you can approximate it better using iteration methods like the Newton-Raphson method or something
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